1 // lrtextview.h

     2 // 

     3 // Copyright (c) 2009 - 2010 Accenture. All rights reserved.

     4 // This component and the accompanying materials are made available

     5 // under the terms of the "Eclipse Public License v1.0"

     6 // which accompanies this distribution, and is available

     7 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 // 

     9 // Initial Contributors:

    10 // Accenture - Initial contribution

    11 //

    12 #ifndef LRTEXTVIEW_H_

    13 #define LRTEXTVIEW_H_

    14 

    15 #include "textview.h"

    16 

    17 class CColorConsoleBase;

    18 class CLineData;

    19 

    20 //Main class reading/writing normal (not-unicode) text arranged left-to-right on the screen.

    21 class CLRTextView : public CTextView

    22 {

    23 public:

    24 	static CLRTextView* NewL(MConsoleProvider& aConsoleProvider, CFedBufferBase& aBuffer);

    25 	~CLRTextView();

    26 

    27 protected:

    28 	CLRTextView(MConsoleProvider& aConsoleProvider, CFedBufferBase& aBuffer);

    29 	void ConstructL();

    30 

    31 public:

    32 	//MDeferredClose

    33 	TBool TryCloseL();

    34 

    35 	//MKeyConsumer

    36 	TBool ConsumeKeyL(const TKeyCode& aCode);

    37 

    38 	//CTextView

    39 	void DoResizeL(const TWindow& aOldWindow);

    40 	void DoRedrawL();

    41 	void DoDrawL();

    42 

    43 protected:

    44 	void ValidateCursor();

    45 	void UpdateCursor(const TPoint& aNewPos);

    46 	void HandleControlChar();

    47 	void AppendChar(TUint16 aChar);

    48 	void WriteLine();

    49 	void WriteChars();

    50 	void GoToNextLine();

    51 	void WriteLineContinue();

    52 	void LineFinished();

    53 	TInt DocumentPosition() const;

    54 	void MoveCursor(TInt aX, TInt aY);

    55 	void InsertTextL(const TDesC& aText);

    56 	void DeleteTextL(TInt aNumChars);

    57 	void DeleteCurrentLineL();

    58 	void UpdateStatus();

    59 	TInt Save();

    60 	TInt SaveAs();

    61 	void HandleSaveResult(TInt aError, TBool aWasOpen, const TDesC& aName);

    62 	void GoToLine();

    63 	void GoToLine(TInt aLine);

    64 	void DoDrawL(TBool aUpdateCursorAndStatus); // Occasionally we want to do a draw without updating

    65 	void CenterDocPosOnScreen(TInt aDocumentPosition);

    66 	TPoint WindowLocationForDocumentPosition(TInt aDocPos) const; // Assuming the doc pos is on screen in an area that's been drawn

    67 	void RedrawFromPositionToEndOfLine(TInt aDocumentPosition, TInt aNumCharsInserted);

    68 	void Find();

    69 	void CopyOrCutL(TBool aCut);

    70 	void PasteL();

    71 	void CopyToClipboardL(const TDesC& aBuf);

    72 	HBufC* GetFromClipboardL();

    73 	void SetMark();

    74 	void CancelMark();

    75 	static TInt FlashMark(TAny* aSelf);

    76 	void DoFlashMark();

    77 	TBool MarkActive() const;

    78 	void UpdateDocumentPositionsStartingAtLine(TInt aLine, TInt aDelta);

    79 

    80 private:

    81 	CLineData* iLineData;

    82 	TInt iCurrentDrawDocIndex; // Used while drawing to construct iLineData document positions, has no meaning outside of there

    83 	TBool iLineIsErrorMessage;

    84 	TBuf<256> iFindText;

    85 	CPeriodic* iMarkFlasher;

    86 	TInt iMarkDocPos;

    87 	TBool iMarkShown;

    88 	TInt iOldNextLine; // Used to limit how much redrawing we need to do

    89 	TInt iOldNextLineDocPos; // Ditto

    90 	TInt iPredictedOldNextLineDocPosDelta; // Ditto

    91 	TBool* iRecursiveUpdateFlag; // For times when DoDrawL's aUpdateStatusAndCursor flag needs tracking through calls to RequestData

    92 };

    93 

    94 class CLineData : public CBase

    95 	{

    96 public:

    97 	void EnsureCapacityL(TInt aWidth, TInt aHeight);

    98 	TInt DocumentPosition(TInt aLine) const;

    99 	TInt FileLineNumber(TInt aLine) const;

   100 	TBool IsScreenPositionValid(TInt aLine, TInt aCol) const;

   101 	TInt LastValidPosition(TInt aLine) const;

   102 

   103 	void SetDocumentPositionForLine(TInt aLine, TInt aDocumentPosition);

   104 	void SetFileLineNumberForLine(TInt aLine, TInt aDocumentPosition);

   105 	void SetPositionIsValid(TInt aLine, TInt aCol, TBool aValid);

   106 	void LineFinishedAt(TInt aLine, TInt aCol);

   107 

   108 	~CLineData();

   109 

   110 private:

   111 	const TUint8& ByteForPos(TInt aLine, TInt aCol, TInt& aOffset) const;

   112 	TUint8& ByteForPos(TInt aLine, TInt aCol, TInt& aOffset);

   113 

   114 private:

   115 	TInt iLineLen;

   116 	TInt* iDocPosAndLine;

   117 	TUint8* iScreenIndexes;

   118 	};

   119 

   120 

   121 #endif /*LRTEXTVIEW_H_*/